The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI)

Catherine A. Clark; Gerard T. Van Belle; Elliott P. Horch; David E. Trilling; Zachary D. Hartman; Michael Collins; Kaspar Von Braun; Jeff Gehring

doi:10.1117/12.2563055

The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI)

Catherine A. Clark, Gerard T. Van Belle, Elliott P. Horch, David E. Trilling, Zachary D. Hartman, Michael Collins, Kaspar Von Braun, Jeff Gehring

Astronomy and Planetary Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

The Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI) is a new speckle imaging instrument available on the 4.3-m Lowell Discovery Telescope (LDT). QWSSI is built to efficiently make use of collected photons and available detector area. The instrument images on a single Electron Multiplying CCD (EMCCD) at four wavelengths in the optical (577, 658, 808, and 880nm) with 40nm bandpasses. Longward of 1μm, two imaging wavelengths in the NIR are collected at 1150 and 1570nm on two InGaAs cameras with 50nm bandpasses. All remaining non-imaging visible light is then sent into a wavefront EMCCD. All cameras are operated synchronously via concurrent triggering from a timing module. With the simultaneous wavefront sensing, QWSSI characterizes atmospheric aberrations in the wavefront for each speckle frame. This results in additional data that can be utilized during post-processing, enabling advanced techniques such as Multi-Frame Blind Deconvolution. The design philosophy was optimized for an inexpensive, rapid build; virtually all parts were commercial-off-the-shelf (COTS), and custom parts were fabricated or 3D printed on-site. QWSSI's unique build and capabilities represent a new frontier in civilian high-resolution speckle imaging.

Original language	English (US)
Title of host publication	Optical and Infrared Interferometry and Imaging VII
Editors	Peter G. Tuthill, Antoine Merand, Stephanie Sallum
Publisher	SPIE
ISBN (Electronic)	9781510636798
DOIs	https://doi.org/10.1117/12.2563055
State	Published - 2020
Event	Optical and Infrared Interferometry and Imaging VII 2020 - Virtual, Online, United States Duration: Dec 14 2020 → Dec 22 2020

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11446
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Optical and Infrared Interferometry and Imaging VII 2020
Country/Territory	United States
City	Virtual, Online
Period	12/14/20 → 12/22/20

Keywords

Diffraction-limited imaging
Instrument design
Speckle imaging
Stellar proper- ties
Wavefront-sensing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2563055

Cite this

Clark, C. A., Van Belle, G. T., Horch, E. P., Trilling, D. E., Hartman, Z. D., Collins, M., Von Braun, K., & Gehring, J. (2020). The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI). In P. G. Tuthill, A. Merand, & S. Sallum (Eds.), Optical and Infrared Interferometry and Imaging VII Article 114462A (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11446). SPIE. https://doi.org/10.1117/12.2563055

The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI). / Clark, Catherine A.; Van Belle, Gerard T.; Horch, Elliott P. et al.
Optical and Infrared Interferometry and Imaging VII. ed. / Peter G. Tuthill; Antoine Merand; Stephanie Sallum. SPIE, 2020. 114462A (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11446).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Clark, CA, Van Belle, GT, Horch, EP, Trilling, DE, Hartman, ZD, Collins, M, Von Braun, K & Gehring, J 2020, The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI). in PG Tuthill, A Merand & S Sallum (eds), Optical and Infrared Interferometry and Imaging VII., 114462A, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11446, SPIE, Optical and Infrared Interferometry and Imaging VII 2020, Virtual, Online, United States, 12/14/20. https://doi.org/10.1117/12.2563055

Clark CA, Van Belle GT, Horch EP, Trilling DE, Hartman ZD, Collins M et al. The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI). In Tuthill PG, Merand A, Sallum S, editors, Optical and Infrared Interferometry and Imaging VII. SPIE. 2020. 114462A. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2563055

Clark, Catherine A. ; Van Belle, Gerard T. ; Horch, Elliott P. et al. / The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI). Optical and Infrared Interferometry and Imaging VII. editor / Peter G. Tuthill ; Antoine Merand ; Stephanie Sallum. SPIE, 2020. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "The Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI) is a new speckle imaging instrument available on the 4.3-m Lowell Discovery Telescope (LDT). QWSSI is built to efficiently make use of collected photons and available detector area. The instrument images on a single Electron Multiplying CCD (EMCCD) at four wavelengths in the optical (577, 658, 808, and 880nm) with 40nm bandpasses. Longward of 1μm, two imaging wavelengths in the NIR are collected at 1150 and 1570nm on two InGaAs cameras with 50nm bandpasses. All remaining non-imaging visible light is then sent into a wavefront EMCCD. All cameras are operated synchronously via concurrent triggering from a timing module. With the simultaneous wavefront sensing, QWSSI characterizes atmospheric aberrations in the wavefront for each speckle frame. This results in additional data that can be utilized during post-processing, enabling advanced techniques such as Multi-Frame Blind Deconvolution. The design philosophy was optimized for an inexpensive, rapid build; virtually all parts were commercial-off-the-shelf (COTS), and custom parts were fabricated or 3D printed on-site. QWSSI's unique build and capabilities represent a new frontier in civilian high-resolution speckle imaging.",

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The optomechanical design of the Quad-camera Wavefront-sensing Six-channel Speckle Interferometer (QWSSI)

Abstract

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Keywords

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